<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
         <!-- 搜索 -->
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" 
                    v-model="queryInfo.query" clearable
                    @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search"
                    @click="getUserList"></el-button>
                </el-input>
            </el-col>
         
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>

        <!-- 用户列表区 -->
        <el-table :data="userlist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>    
            <el-table-column label="邮箱" prop="email"></el-table-column> 
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <!-- 作用域插槽 -->
                <template slot-scope="scope">
                    <el-switch 
                        v-model="scope.row.mg_state" 
                        @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template slot-scope="scope">
                    <!-- 修改 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini"
                    @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini"
                   @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色 -->
                    <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-setting" 
                                    size="mini" @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>    
        </el-table>

        <!-- 分页 -->
         <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 8]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
        </el-pagination>


        <!-- 添加用户对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClose">
            <!-- 内容主体区 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password" type="password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClose">
            <!-- 内容主体区 -->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择角色">
                        <el-option
                            v-for="item in rolesList" 
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>


    </el-card>
  </div>
</template>

<script>
    export default {
        name:'UsersU',
        data(){
            // 验证邮箱规则
            var checkEmail = (rule,value,cb) => {
                // 验证邮箱正则表达式
                const regEmail = /^[a-zA-Z0-9_.-]+@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.[a-zA-Z0-9]{2,6}$/
                if(regEmail.test(value)){
                    // 合法对象
                    return cb()
                }
                cb(new Error('请输入合法的邮箱'))
            }
            // 验证手机号规则
            var checkMobile = (rule,value,cb) => {
                const regMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/
                if(regMobile.test(value)){
                    // 合法对象
                    return cb()
                }
                cb(new Error('请输入合法的手机号'))
            } 
            return{
                // 获取用户列表参数对象
                queryInfo:{
                    query: '',
                    // 当前页数
                    pagenum:1,
                    // 当前每页显示多少条数据
                    pagesize:2
                },
                userlist:[],
                total:0,
                // 控制添加对话框的显示与隐藏
                addDialogVisible:false,
                // 添加用户的表单数据
                addForm:{
                    username:'',
                    password:'',
                    email:'',
                    mobile:''
                },
                // 添加表单的验证规则对象
                addFormRules:{
                    username:[
                        { required: true, message: '请输入用户名', trigger: 'blur' },
                        { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                    ],
                    password:[
                        { required: true, message: '请输入密码', trigger: 'blur' },
                        { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                    ],
                    email:[
                        { required: true, message: '请输入邮箱', trigger: 'blur' },
                        { validator: checkEmail, trigger: 'blur' }
                    ],
                    mobile:[
                        { required: true, message: '请输入手机号', trigger: 'blur' },
                        { validator: checkMobile, trigger: 'blur' }
                    ]

                },
                // 控制修改用户对话框的显示与隐藏
                editDialogVisible:false,
                // 查询到的用户信息对象
                editForm:{},
                // 修改表单的验证规则对象
                editFormRules:{
                    email:[
                        { required: true, message: '请输入邮箱', trigger: 'blur' },
                        { validator: checkEmail, trigger: 'blur' }
                    ],
                    mobile:[
                        { required: true, message: '请输入手机号', trigger: 'blur' },
                        { validator: checkMobile, trigger: 'blur' }
                    ]

                },
                // 控制分配角色对话框的显示与隐藏
                setRoleDialogVisible:false,
                // 需要被分配角色的用户信息
                userInfo:{},
                // 所有角色数据列表
                rolesList:[],
                // 已选中的角色id值
                selectedRoleId:''
            }
        },
        // 生命周期之前获取用户列表
        created(){
            this.getUserList()
        },
        methods:{
            async getUserList(){
                const {data:res} = await this.$http.get('users',{params:this.queryInfo})
                if(res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
                this.userlist = res.data.users
                this.total = res.data.total
            },
            // 监听pagesize改变的事件
            handleSizeChange(newSize){
                this.queryInfo.pagesize = newSize
                this.getUserList()
            },
            // 监听页码改变
            handleCurrentChange(newPage){
                this.queryInfo.pagenum = newPage
                this.getUserList()
            },
            // 监听switch开关的转变
            async userStateChanged(userinfo){
              const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
              if(res.meta.status !== 200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户失败！')
              } 
              this.$message.success('更新用户状态成功')
            },
            // 监听添加用户对话框的关闭事件
            addDialogClose(){
                this.$refs.addFormRef.resetFields()
            },
            // 点击添加新用户
            addUser(){
                this.$refs.addFormRef.validate(async valid => {
                    if(!valid) return
                    // 可以发起添加用户的网络请求
                    const {data:res} = await this.$http.post('users',this.addForm);
                    if(res.meta.status !== 201) return this.$message.error("添加用户失败！");
                    this.$message.success("添加用户成功");
                    // 隐藏添加用户的对话框
                    this.addDialogVisible = false
                    this.getUserList()
                })
            },
            // 展示编辑用户的对话框
            async showEditDialog(id){
                  const {data:res} = await this.$http.get('users/' + id);
                  if(res.meta.status !== 200) return this.$message.error("查询用户失败！");
                  this.editForm = res.data
                this.editDialogVisible = true
                
            },
             // 监听修改用户对话框的关闭事件
            editDialogClose(){
                 this.$refs.editFormRef.resetFields()
            },
            // 点击修改用户信息
            editUser(){
                this.$refs.editFormRef.validate(async valid => {
                    if(!valid) return
                    // 可以发起修改用户的网络请求
                    const {data:res} = await this.$http.put('users/' + this.editForm.id,{
                        email:this.editForm.email,
                        mobile:this.editForm.mobile
                    });
                    if(res.meta.status !== 200) return this.$message.error("更新用户信息失败！");
                    // 关闭对话框
                    this.editDialogVisible = false
                    // 更新数据列表
                    this.getUserList()
                    // 提示修改成功
                    this.$message.success("更新用户信息成功");
                })
            }, 
            // 根据id删除用户
            async removeUserById(id){
                // 弹窗提示
                const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err => err)

                // 用户确认删除 返回confirm字符串
                // 用户取消删除 返回cancel字符串
                if(confirmResult !== 'confirm') return this.$message.info('已取消删除')
                const {data:res} = await this.$http.delete('users/' + id)
                if(res.meta.status !== 200) return this.$message.error("删除用户失败")
                // 更新数据列表
                this.getUserList()
                // 提示删除成功
                this.$message.success("删除用户成功");
           },
            // 展示分配角色对话框     
            async setRole(userInfo){
                this.userInfo = userInfo

                // 在展示对话框之前，获取所有角色的列表
                const {data:res} = await this.$http.get('roles')
                if(res.meta.status !== 200) return this.$message.error("获取角色列表失败！");
                this.rolesList = res.data
                this.setRoleDialogVisible = true
           },
            // 点击按钮 分配角色
            async saveRoleInfo(){
                if(!this.selectedRoleId){
                    return this.$message.error('请选择要分配的角色!')
                }
                const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid: this.selectedRoleId})
                if(res.meta.status !== 200) return this.$message.error("分配角色失败！");
                this.$message.success("分配角色成功");
                this.setRoleDialogVisible = false
            },
            // 监听分配角色对话框的关闭事件
            setRoleDialogClosed(){
                this.selectedRoleId = ''
                this.userInfo = {}
            }
        }
    }
</script>

<style scoped>

</style>